package com.changgou.goods.service.impl;

import com.alibaba.fastjson.JSON;
import com.changgou.entity.Result;
import com.changgou.goods.dao.*;
import com.changgou.goods.pojo.*;
import com.changgou.goods.service.SpuService;
import com.changgou.utils.IdWorker;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.PathVariable;
import tk.mybatis.mapper.entity.Example;

import java.util.Date;
import java.util.List;
import java.util.Map;

@Service
public class SpuServiceImpl implements SpuService {

    @Autowired
    private SpuMapper spuMapper;
    @Autowired
    private IdWorker idWorker;
    @Autowired
    private CategoryMapper categoryMapper;
    @Autowired
    private BrandMapper brandMapper;
    @Autowired
    private SkuMapper skuMapper;
    @Autowired
    private CategoryBrandMapper categoryBrandMapper;


    public Spu findSpuBySpuId(@PathVariable String id){
        //查询spu
        Spu spu = spuMapper.selectByPrimaryKey(id);
        return spu;
    }

    /**
     * 查询全部列表
     * @return
     */
    @Override
    public List<Spu> findAll() {
        return spuMapper.selectAll();
    }

    /**
     * 根据ID查询
     * @param id
     * @return
     */
    @Override
    public Goods findById(String id){
        //查询spu
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //根据spuid查询skuList
        Example example = new Example(Sku.class);
         example.createCriteria().andEqualTo("spuId",id);
        List<Sku> skuList = skuMapper.selectByExample(example);
        Goods goods = new Goods();
        goods.setSpu(spu);
        goods.setSkuList(skuList);
        return goods;
    }


    /**
     * 增加
     * @param goods
     */
    @Override
    public void add(Goods goods){
        //添加spu
        Spu spu = goods.getSpu();
        //设置主键
        long l = idWorker.nextId();
        spu.setId(String.valueOf(l));
        System.out.println(String.valueOf(l));
        //设置是否删除，0表示没有删除
        spu.setIsDelete("0");
        //设置是否上架。0表示没有上架
        spu.setIsMarketable("0");
        //设置审核状态，0表示没有审核
        spu.setStatus("0");
        //最后添加spu ,insertSelective这个表示字段如果为null使用数据库的默认值
        spuMapper.insertSelective(spu);

        //添加关联的sku
        this.saveSkuList(goods);

    }
    //添加sku
    private void saveSkuList(Goods goods){
        //设置时间
        Date date = new Date();
        //获取spu
        Spu spu = goods.getSpu();
        //获取商品分类对象，根据3级目录
        Integer category3Id = spu.getCategory3Id();
        Category category = categoryMapper.selectByPrimaryKey(category3Id);
        //根据spu中的品牌ID去查询对应的品牌
        Brand brand = brandMapper.selectByPrimaryKey(spu.getBrandId());


        //品牌ID与商品分类ID的关联，自定义了实体类和dao 为了操作tb_category_brand这张表
        //新建对象，修改属性值，根据这个对象去查表
        CategoryBrand categoryBrand = new CategoryBrand();
        categoryBrand.setBrandId(spu.getBrandId());
        categoryBrand.setCategoryId(spu.getCategory3Id());
        int i = categoryBrandMapper.selectCount(categoryBrand);
        //如果等于0，说明没有关联，然后添加关联进去
        if(i==0){
            categoryBrandMapper.insert(categoryBrand);
        }


        //获取sku
        List<Sku> skuList = goods.getSkuList();
        //判断是否为空
        if(skuList==null){
            throw new RuntimeException("请选择正确的规格");
        }
        for (Sku sku : skuList) {
            //1.设置sku主键
            sku.setId(String.valueOf(idWorker.nextId()));
            //2.设置spec规格
            if(StringUtils.isEmpty(sku.getSpec())){
                sku.setSpec("{}");
            }
            //3.设置sku的名称，sku名称=spu名称+规格
            String spuName = spu.getName();
            Map<String,String> map = JSON.parseObject(sku.getSpec(), Map.class);
            for (String value : map.values()) {
                spuName+=""+value;
            }
            sku.setName(spuName);
            //4.设置spuId
            sku.setSpuId(spu.getId());
            //5.设置时间
            sku.setCreateTime(date);
            sku.setUpdateTime(date);
            //6.设置分类id和分类名称，注意该分类是spu表中的三级分类id获取的
            sku.setCategoryId(category.getId());
            sku.setCategoryName(category.getName());
            //7.设置品牌名称
            sku.setBrandName(brand.getName());
            //8.循环添加sku
            skuMapper.insertSelective(sku);
        }

    };


    /**
     * 修改
     * @param goods
     */
    @Override
    public void update(Goods goods){
        //1.修改spu
        Spu spu = goods.getSpu();
        spuMapper.updateByPrimaryKeySelective(spu);
        //2.修改sku
        //2.1要删除skuList列表
        Example example=new Example(Sku.class);
        example.createCriteria().andEqualTo("spuId",spu.getId());
        skuMapper.deleteByExample(example);
        //2.2然后重新添加sku列表
        this.saveSkuList(goods);
    }

    /**
     * 删除
     * @param id
     */
    @Transactional
    @Override
    public void delete(String id){
        //查询spu对象
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //必须先下架才能删除
        if(!"0".equals(spu.getIsMarketable())){
            throw  new RuntimeException("必须先下架才能删除！");
        }
        spu.setIsDelete("1");//逻辑删除
        spu.setStatus("0");//未审核
        spuMapper.updateByPrimaryKeySelective(spu);
    }


    /**
     * 条件查询
     * @param searchMap
     * @return
     */
    @Override
    public List<Spu> findList(Map<String, Object> searchMap){
        Example example = createExample(searchMap);
        return spuMapper.selectByExample(example);
    }

    /**
     * 分页查询
     * @param page
     * @param size
     * @return
     */
    @Override
    public Page<Spu> findPage(int page, int size){
        PageHelper.startPage(page,size);
        return (Page<Spu>)spuMapper.selectAll();
    }

    /**
     * 条件+分页查询
     * @param searchMap 查询条件
     * @param page 页码
     * @param size 页大小
     * @return 分页结果
     */
    @Override
    public Page<Spu> findPage(Map<String,Object> searchMap, int page, int size){
        PageHelper.startPage(page,size);
        Example example = createExample(searchMap);
        return (Page<Spu>)spuMapper.selectByExample(example);
    }

    /**
     * 构建查询对象
     * @param searchMap
     * @return
     */
    private Example createExample(Map<String, Object> searchMap){
        Example example=new Example(Spu.class);
        Example.Criteria criteria = example.createCriteria();
        if(searchMap!=null){
            // 主键
            if(searchMap.get("id")!=null && !"".equals(searchMap.get("id"))){
                criteria.andEqualTo("id",searchMap.get("id"));
           	}
            // 货号
            if(searchMap.get("sn")!=null && !"".equals(searchMap.get("sn"))){
                criteria.andEqualTo("sn",searchMap.get("sn"));
           	}
            // SPU名
            if(searchMap.get("name")!=null && !"".equals(searchMap.get("name"))){
                criteria.andLike("name","%"+searchMap.get("name")+"%");
           	}
            // 副标题
            if(searchMap.get("caption")!=null && !"".equals(searchMap.get("caption"))){
                criteria.andLike("caption","%"+searchMap.get("caption")+"%");
           	}
            // 图片
            if(searchMap.get("image")!=null && !"".equals(searchMap.get("image"))){
                criteria.andLike("image","%"+searchMap.get("image")+"%");
           	}
            // 图片列表
            if(searchMap.get("images")!=null && !"".equals(searchMap.get("images"))){
                criteria.andLike("images","%"+searchMap.get("images")+"%");
           	}
            // 售后服务
            if(searchMap.get("saleService")!=null && !"".equals(searchMap.get("saleService"))){
                criteria.andLike("saleService","%"+searchMap.get("saleService")+"%");
           	}
            // 介绍
            if(searchMap.get("introduction")!=null && !"".equals(searchMap.get("introduction"))){
                criteria.andLike("introduction","%"+searchMap.get("introduction")+"%");
           	}
            // 规格列表
            if(searchMap.get("specItems")!=null && !"".equals(searchMap.get("specItems"))){
                criteria.andLike("specItems","%"+searchMap.get("specItems")+"%");
           	}
            // 参数列表
            if(searchMap.get("paraItems")!=null && !"".equals(searchMap.get("paraItems"))){
                criteria.andLike("paraItems","%"+searchMap.get("paraItems")+"%");
           	}
            // 是否上架
            if(searchMap.get("isMarketable")!=null && !"".equals(searchMap.get("isMarketable"))){
                criteria.andEqualTo("isMarketable",searchMap.get("isMarketable"));
           	}
            // 是否启用规格
            if(searchMap.get("isEnableSpec")!=null && !"".equals(searchMap.get("isEnableSpec"))){
                criteria.andEqualTo("isEnableSpec", searchMap.get("isEnableSpec"));
           	}
            // 是否删除
            if(searchMap.get("isDelete")!=null && !"".equals(searchMap.get("isDelete"))){
                criteria.andEqualTo("isDelete",searchMap.get("isDelete"));
           	}
            // 审核状态
            if(searchMap.get("status")!=null && !"".equals(searchMap.get("status"))){
                criteria.andEqualTo("status",searchMap.get("status"));
           	}

            // 品牌ID
            if(searchMap.get("brandId")!=null ){
                criteria.andEqualTo("brandId",searchMap.get("brandId"));
            }
            // 一级分类
            if(searchMap.get("category1Id")!=null ){
                criteria.andEqualTo("category1Id",searchMap.get("category1Id"));
            }
            // 二级分类
            if(searchMap.get("category2Id")!=null ){
                criteria.andEqualTo("category2Id",searchMap.get("category2Id"));
            }
            // 三级分类
            if(searchMap.get("category3Id")!=null ){
                criteria.andEqualTo("category3Id",searchMap.get("category3Id"));
            }
            // 模板ID
            if(searchMap.get("templateId")!=null ){
                criteria.andEqualTo("templateId",searchMap.get("templateId"));
            }
            // 运费模板id
            if(searchMap.get("freightId")!=null ){
                criteria.andEqualTo("freightId",searchMap.get("freightId"));
            }
            // 销量
            if(searchMap.get("saleNum")!=null ){
                criteria.andEqualTo("saleNum",searchMap.get("saleNum"));
            }
            // 评论数
            if(searchMap.get("commentNum")!=null ){
                criteria.andEqualTo("commentNum",searchMap.get("commentNum"));
            }

        }
        return example;
    }

    /**
     * 商品审核
     * @param id  为spuId
     */
    @Transactional
    @Override
    public void audit(String id) {
        //查询spu对象
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //判断商品是否存在
        if(spu==null){
            throw new RuntimeException("商品 不存在");
        }
        //判断商品是否被删除
        if("1".equals(spu.getIsDelete())){
            throw new RuntimeException("商品已经被删除");
        }
        spu.setStatus("1");
        spu.setIsMarketable("1");
        spuMapper.updateByPrimaryKeySelective(spu);
    }
    /**
     * 下架商品
     * @param id
     */
    @Transactional
    @Override
    public void pull(String id) {
        //查询spu对象
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //判断商品是否存在
        if(spu==null){
            throw new RuntimeException("商品 不存在");
        }
        //判断商品是否被删除
        if("1".equals(spu.getIsDelete())){
            throw new RuntimeException("商品已经被删除");
        }
        spu.setIsMarketable("0");
        spuMapper.updateByPrimaryKeySelective(spu);
    }
    /**
     * 上架商品
     * @param id
     */
    @Transactional
    @Override
    public void put(String id) {
        //查询spu对象
        Spu spu = spuMapper.selectByPrimaryKey(id);
        //判断商品是否存在
        if(spu==null){
            throw new RuntimeException("商品不存在");
        }
        if(!"1".equals(spu.getStatus())){
            throw  new RuntimeException("未通过审核的商品不能上架！");
        }
        spu.setIsMarketable("1");//设置为上架
        spuMapper.updateByPrimaryKeySelective(spu);
    }

    /**
     * 还原逻辑删除的商品
     * @param id
     */
    @Transactional
    @Override
    public void restore(String id) {
        //查询spu对象
        Spu spu = spuMapper.selectByPrimaryKey(id);
        if(!spu.getIsDelete().equals("1")){
            throw  new RuntimeException("此商品未删除！");
        }
        spu.setIsDelete("0");
        spu.setStatus("0");//未审核
        spuMapper.updateByPrimaryKeySelective(spu);
    }

    /**
     * 物理删除
     * @param id
     */
    @Transactional
    @Override
    public void realDelete(String id) {
        //查询spu对象
        Spu spu = spuMapper.selectByPrimaryKey(id);
        if(!spu.getIsDelete().equals("1")){
            throw  new RuntimeException("此商品未删除！");
        }
        spuMapper.deleteByPrimaryKey(spu);
    }

}
